Person: Müller, Alexandra
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Veröffentlichung Pesticides are the dominant stressors for vulnerable insects in lowland streams(2021) Liess, Matthias; Hitzfeld, Kristina; Liebmann, Liana; Müller, Alexandra; Vormeier, Philipp; Wogram, JörnDespite elaborate regulation of agricultural pesticides, their occurrence in non-target areas has been linked to adverse ecological effects on insects in several field investigations. Their quantitative role in contributing to the biodiversity crisis is, however, still not known. In a large-scale study across 101 sites of small lowland streams in Central Europe, Germany we revealed that 83% of agricultural streams did not meet the pesticide-related ecological targets. For the first time we identified that agricultural nonpoint-source pesticide pollution was the major driver in reducing vulnerable insect populations in aquatic invertebrate communities, exceeding the relevance of other anthropogenic stressors such as poor hydro-morphological structure and nutrients. We identified that the current authorisation of pesticides, which aims to prevent unacceptable adverse effects, underestimates the actual ecological risk as (i) measured pesticide concentrations exceeded current regulatory acceptable concentrations in 81% of the agricultural streams investigated, (ii) for several pesticides the inertia of the authorisation process impedes the incorporation of new scientific knowledge and (iii) existing thresholds of invertebrate toxicity drivers are not protective by a factor of 5.3 to 40. To provide adequate environmental quality objectives, the authorisation process needs to include monitoring-derived information on pesticide effects at the ecosystem level. Here, we derive such thresholds that ensure a protection of the invertebrate stream community. © 2021 Elsevier Ltd.Veröffentlichung Kleingewässermonitoring - Realitätscheck der Umweltrisikobewertung von Pflanzenschutzmitteln(2020) Hitzfeld, Kristina; Müller, AlexandraAuch ein strenges Zulassungsverfahren von Pflanzenschutzmitteln (PSM) kann deren Einträge in Gewässer nicht vollständig verhindern. Ein bundesweites Monitoring überprüft, wie belastet kleine Gewässer der Agrarlandschaft mit PSM-Rückständen sind und vergleicht die Funde mit den Vorher- sagen der prospektiven Risikobewertung. Quelle: https://www.springerprofessional.deVeröffentlichung Pestizide im Wasser: Da schwimmt was mit(2022) Hilliges, Falk; Hitzfeld, Kristina; Koschorreck, Jan; Müller, AlexandraUmweltfachleute weisen regelmäßig nach, wie stark Flüsse, Seen, Küstengewässer und Grundwasser durch Pestizide belastet sind. Die Schadstoffe stammen häufig aus der Landwirtschaft und gelangen durch Versickerung, Oberflächenabfluss und Abdrift in die Gewässer. Quelle: https://www.boell.de/Veröffentlichung Small, vulnerable and largely ignored in the past - UBA intiative for an envent-driven monitoring of pesticide residues in small surface waters in German agricultural landscapes(2019) Frische, Tobias; Hitzfeld, Kristina; Karaoglan, Bilgin; Müller, Alexandra; Pickl, Christina